Dictionaryev•o•lutePronunciation: (ev'u-lOOt" or, esp. Brit., ē'vu-), [key] —n. Geom. the locus of the centers of curvature of, or the envelope of the normals to, another curve. Cf. involute (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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